<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>stable-bottom</title>
        <link rel="stylesheet" href="flex2.css">
    </head>
    <body class="Site">
        <header>header</header>
        <main class="Site-content">main
            <img src="images/联系我们@3x.png">
            <img src="images/联系我们@3x.png">
            <img src="images/联系我们@3x.png">
            <img src="images/联系我们@3x.png">
        </main>
        <footer>footer</footer>
    </body>
</html>